stm32 ADC12路采集DMA程序源碼

ID:280323 · 發表于 2018-11-21 17:38

這里配置一個ADC多路ADC同時觸發的DMA程序，

ADC配置
ADC_DeInit(ADC1);                                                                                                                //復位ADC1,將外設 ADC1 的全部寄存器重設為缺省值

      ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;                                              //ADC工作模式:ADC1和ADC2工作在獨立模式
      ADC_InitStructure.ADC_ScanConvMode = ENABLE;                                                       //模數轉換工作在掃描模式
      ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;                                              //模數轉換工作在連續轉換模式
      ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;             //轉換由軟件而不是外部觸發啟動
      ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;                                     //ADC數據右對齊
      ADC_InitStructure.ADC_NbrOfChannel = N;                                                             //順序進行規則轉換的ADC通道的數目
      ADC_Init(ADC1, &ADC_InitStructure);

DMA配置

DMA_DeInit(DMA1_Channel1);                                                                                                                //將DMA的通道1寄存器重設為缺省值       DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR;                                        //定義DMA外設基地址為ADC1       DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADC_RCVTab;                                        //定義DMA內存基地址       DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;                                                                //外設作為數據傳輸的來源       DMA_InitStructure.DMA_BufferSize = N*16;                                                                                        //定義指定DMA通道的DMA緩存的大小       DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;                               //外設地址寄存器不變       DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;                                                       //內存地址寄存器遞增       DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;             //數據寬度為16位       DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;                               //數據寬度為16位       DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;                                                                         //工作在循環緩存模式       DMA_InitStructure.DMA_Priority = DMA_Priority_High;                                                             //DMA通道1擁有高優先級       DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;                                                                      //DMA通道1沒有設置為內存到內存傳輸       DMA_Init(DMA1_Channel1, &DMA_InitStructure);

配置ADC轉換順序及周期
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 0, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 2, ADC_SampleTime_1Cycles5);             ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 3, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_4, 4, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_5, 5, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_6, 6, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_7, 7, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 8, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_9, 9, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_10, 10, ADC_SampleTime_1Cycles5);       ADC_RegularChannelConfig(ADC1, ADC_Channel_11, 11, ADC_SampleTime_1Cycles5);

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stm32 ADC12路采集DMA程序源碼

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